Grate



(No Model.) 2 Sheets-Sheet 1.

W. E. KELLY.

GMT-B.

No. 331,141. 5, x Patented Nov. 24,1885.

N. PETERS. Phumumogmphvr. washingm n. c.

2 sheets-sheet 2.

(No Model.)

W. E, KELLY.`

GRATE.

Patented Nov. 24, 18855,

llniirnn STATES Partnr @mics WILLAM E. KELLY, OF NEW BRUNSWICK, NEV JERSEY.

GRATE.

SPECIFICATON forming part of Letters Patent No. 331,141, dated November 24, 1885.

Application filed January 31, 1885. Serial No. 154,556. (No model.)

A which the following is a specification.

like portions.

I will describe in detail a grate embodying my improvement, and then point out the various features in the claims.

The accompanying drawings illustrate a grate embodying my improvement.

Figure l is a plan of the grate with certain parts omitted and furnace-walls illustrated in section. Fig. 2 is a sectional side view of the grate, one of the furnace-walls being also'shown in section. Fig. 3 is a transverse section of the grate, taken at the plane of the dotted line x 0o,` Fig. l, and looking in the direction of the` arrow at the end of the said line. Fig. 4 is a perspective View of the end portion of one of the end pieces of the grate-frame. Fig. 5 is a longitudinal section of a corner of theA grate. Fig. 6 is a transverse section of one of the side pieces of the grate-frame. Fig. 7 is an enlarged side view of one of the grate-bars, certain of its leaves being shown in section. Fig. 8 is an end view of the grate-bar. Fig. 9 is a transverse section of the grate-bar.

Similar letters of reference designate corresponding parts in all the figures.

The grateframe consists of two end pieces, A, and two side pieces, A. The end pieces, A, consist, essentially, of bar-like portions ci, having inwardly-inclined upper surfaces, and legs ct', extending downwardly from the bar- These legs a' extend not only under the bar-like portions, but also beyond the same at about right angles. In other words, the legs are Lshaped in the cross-section. From these end pieces lugs a2 extend horizontally. The side pieces, A', rest on the lugs ci, and are supported thereby. Above the lugs a2 of the end pieces, A, ribs a3 extend from their inner surfaces. The ends of the side pieces, A', are bent inward, so as to fit around the ends and inner sides of the ribs a3, as shown more particularly in Fig. 5. Bolts a* pass through lugs c5, extending from the side pieces, A', and also through the lugs a2, and thereby secure the side pieces and end pieces together. This is a very desirable way of securing the parts together, because it prevents the spread- Y ing ofthe side pieces.

B designates the grate-bars. They are provided with journals b, which fit in cavities formed in the upper edges of the side pieces,`

A', and are secured therein by means of capbars b', extending over them. The cap-bars have inwardly-inclined upper surfaces. Bolts b2 pass through the cap-bars b', and also through lugs b3 b4, extending inwardly from the side pieces, A', and secure the cap-bars in place. The nuts of the bolts are at the lower ends of the bolts below the lugs b". They are therefore so low down that they will not suffer from the heat of the fire on the grate.

The gratebars B are, as here shown, fiatsided,with the exception of ribs b5, extending from opposite sides at the top edges, ribs b, extending from opposite sides at the bottom edges, and ribs 117, extending from opposite sides a short distance above the bottom. The bars are straight along the top, but downwardly arched at the bottom from the middle toward the ends. The ribs b extend along the bottom edges, and consequently conform to the arch thereof. The ribs b7 extend horizontally along the bar from end to end, joining the ribs b6 at the upper ends of the latter. The bars thus are strengthened most where they are subjected to the greatest strain.

The grate-bars B are provided with leaves C C C2. These leaves are slotted from the bottom upward, so that they may be slipped over the grate-bars B from the upper edges of the latter. The slots of the leaves C C are large enough at the top to fit over the ribs b5, but they are small enough 'below to iit snugly against the sides of the bars below the ribs b5. In short, the slots of these leaves C C' conform to the shape of that portion of the bars which is above the ribs b. There are interruptions b in the ribs b5 for a distance equal to the width of one of the leaves C G'G. Each of the leaves C C' of the bars is slipped downwardly upon its bar, the ends being passed through the interruptions of the ribs bs. After each leaf is thus placed it is moved lengthwise of its bar, and then it will be interlocked with the bar, so that it cannot be removed by merely moving it upward. After all the leaves C C' have thus been applied a leaf, C2, which has ICO a parallel-sided slot, is slipped upon the bar through the interruptions of the ribs b5. It keeps the other leaves, C C', in place,and hence may be termed a master-leaf77 or key-leaf. It is secured in position by means of a pin, b, passed through its lower portion and through the bar.

The top surfaces of the leaves C have the forni of arcs concentric with the journals b of the bars B; but the top surfaces of the leaves C are severallyT composed of two arcs of the same radii as the arcs of the top surfaces of the leaves O, but separated by an intermediate flat portion. The leaves C consequently project farther in both directions from the bars than do the leaves C. The leaves C and C are alternated on the bars, and are so arranged upon the adjacent bars that the leaves C of each bar are opposite the leaves C of the next bars. The leaves C2 may have their top surfaces like the top surfaces of either the bars G or the bars C', as circumstances require.

The top surfaces of al1 the leaves C C C2 are narrower than the parts fitting upon the bars B; hence the portions fitting upon the bars serve as spacing-.pieces for regulating the distances between the top surfaces. These spac ingpieces may extend wholly from one side or from both sides of the several leaves. rIhe spacing-pieces are so shaped as to have diverging inclined surfaces at the upper portion for shedding anything which may fall upon them. Preferably lthe top surfaces of the bars overhang the portions immediately below them, in order to afford clearance `to anything descending below'the top surfaces.

By extending the leaves far down the sides of the bars the latter are protected from injury through heat and preserved in better condition than otherwise would be possible.

time. leaves may be detached and lifted off and the other leaves subsequently slipped lengthwise y The bars B have. near their journals b, l

'an'ges b and shoulders b" for strengthening The end pieces, A, ofthe grate-frame havez lugs al, which extend toward the leaves of the adjacent grate-bars.

The bars B have cylindric studs 111 projecting from their lower portion at one end.`

These studs are received in cavities or holes in a reach-bar, D. By moving the reach-bar all the bars B, and with them the leaves O C'iC,

The new leaves may be 1 coupling-piece, E, is screwed upon this screwthreaded pin d. The coupling-piece E has` at one end a screw-threaded socket, in which a rod, F, is screwed. The rod F is connected to a lever, G, which is fulcrumed to a bracket, G', extending, as here shown, from one of the furnace-walls. rlhe rodV F is bifurcated at the outer end to embrace the lever-G, and is connected to the lever by a pin passing transversely through it and the lever. By adjusting the coupling-piece E upon the screwthread of the pin d in the direction of the length of the said pin before the rod F is connected tothe coupling-piece,it may be brought into any desired position with relation to the reach-bar D, in order to admit of arranging the lever G conveniently. The rod F may be screwed farther into or out of the couplingpiece E, to suit the position which it is desirable for the lever G normally to occupy. When' the rod is secured to the lever G, it precludes such adjustments. By swinging the lever G the rocking of the grate-bars will be effected.

I do not wish to be confined to locking the leaves C C to the bars B bymeans of the ribs b5, as any other shape of the bars and leaves whereby a different transverse projection of the bars and a correspondingly-varying width in the slots of the leaves or thev latter alone would sub'serve the same end.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The bars B, arched along thebottom and provided with the ribs be, conforming to the arch of the bottom, and the ribs b, substantially as specified.

2. The combination, with grate-bars B, of leaves slotted from the bottom upward,the bars and the slots of the leaves being of different Widths at different portions, so that they may interlock, and the bars having interruptions The leaves can be renewed from time to They may be broken off, or the masterthrough which the leaves may be passed downward, and from which the leaves may afterward be moved lengthwise lof the bars, substantially as specified.

3. The combination, with grate-bars having longitudinal ribs provided with interruptions, of leaves having slots corresponding with the cross-'section of the grate-bars, and a leaf or leaves bolted or votherwise vsecured in place upon the grate-bars for preventing displacement of the leaves rst named, `substantially as specified.

4. The combination, with grate-bars having varying transverse projections, leaves havin-1g. slots of varying widths extending from the bottom upward, interruptions in the bars, through which these leaves may be passed, and master or key leaves, substantially as specified. t

5. The combination, with the grate-bars B,

` having shoulders blflangesb, journals 'b, and

interruptions be, `of leaves provided with slots extending from the bottom upward, lsubstanvided with ribs b5, having interruptions be, of

IOO

tro"r the leaves C C', the leaves C2, and the pins b, substantially as specified.

7. The `combination of the reach-bar D, provided with the pin d, of the coupling-piece E, adjustable relatively to the reacl1-bar along,` the pin Land the rod F, substantially as specified.

8. The combination of the reach-bar D, provided with the pin d, of the coupling-piece E, adjustable along the pin d, the rod F, screwing into the coupling-piece, and the lever G, to which the said rod is so connected that the :rod will be prevented from adjustment in the coupling-piece, and the coupling-piece Will be WI LLAM E. KELLY.

Witnesses:

T. J. KEANE, E. T. ROCHE. 

